Variable-speed mechanism.



H. W." SGHATZ. VARIABLE SPEED MEGHANISM. APPLIoATIoN FILED 11110.28, 1908.*

Patented Mar. 15, 1910.

WITNESSES.-

,.L. IZ?" ATTORNEY.

f UNITED sfrnfrns enfrente HERMAN W. SCI-IATZ, OF CINCINNATI, OHIO, ASSIGNOR TO T-HE AMERICAN TOOL WORKS ,COMPANY, OF CINCINNATI, OHIO, A CORPORATION OF -WEST VIRGINIA..

VARIABLE-SPEED MEOHANISM.

item50.

Specification of Letters Patent.

Patented Mar. 73.5'.

. Application filedDe'eember 28, 1908. Seria] No. 469,569.

i ToA all whom 'firmen concern:

Efe it known that 1', HERMAN XV. SCHATZ,

\ variety of speed change effects may be ohtained by shifting the clutches.

The features ofthe invention are more fullyset forth in the description of the accompanying drawings, forming a part of this specification, in which Figure 1 is a central horizontal section through my improvement. Fig. 2 is seotion on line Fig. 1. Fig. 8 is a side ele. vation of the same.

Fig. t is a Section on line fw, eo, lfij. Fig. 5 is a section on line 0,'Fig- 1.` l1 ig. (5 is a detailedelevation of one of the clutch shifting devices. Fig. 7 is v anend elevation of the friction clutch. Fig.

` 8 isa Central vertical section through a portion of the same.

1l" represents the casing which is shoxvn as adapted to be applied to the bed of a lathe. @represents a driving shaft and 8 a pulley fixed to said shaft for driving the same.

iY represents the. driven shaft or spindle.

suitably journaled Within theeasing 1.

represents a sleeve; loose on shaft 2, carrving gears t), 77 and S, fixed thereto.

t) represents a friction clutch splinedupon shaft i), adapted to he clutched frictionally with gear G.

10 represents a gear loose on shaft 2. hav- .ing a sleeve projection 11. to which is keyed y the frictionclutch easing 12.

13 represents a friction clutch member splined upon shaft L) for lot-king the gear V10 in-driving relation with shaft 14, 15. represent volte arms fixed to the rod 1G for actuating the clutches` simultane ously. so as to prevent both friction membersl from being clutched to their respective gears at the same time.

The friction clutches employed are constructed in a Iwell known manner in which the member 13 carries a swinging arm 50 adapted to engage against .the .friction ring '5,1 seated between a flange projecting from member 13 and member 12.

represents a collar adapted to engage thefree end of the arm for locking the ring into frictional Contact with the member rfhe ring is secured to the member 153 by a key collar 52 being` actuated by the yoke arm 15. The friction clutch for clutching geart with shaft 2 is constructed in the same manner.

17 represents a rack plate fixed 'to-the rod 1G, and 153 represents .a segment fixed upon the actuating rod 19, controlled by lever 20.

2l' represents a sleeve loose on shaft 4.

22 represents a gear loose on sleeve 21 and in mesh with gear t3 upon shaft '2.

23 represents a gear loose on sleeve 2l inv mesh vtith gear 8 on shaft 2.

The gears 22, teeth 2li, adapted to be alternately engaged with the teeth ofthe shifting clutch member keyed to the sleeve 21. said clutch member. being actuated by the lever 26, see Fig.

27 represents a gear fixed to the sleeve 21 in mesh with a gear QS fixed to the stud shaft Q9.

30 represents a gear fixed to the shaft 29, in mesh with av gear 31 loose on the driving shaft- 4.

The gears 27 and 31 are each provided with the clutch teeth 32 adapted to he engaged alternatively by the teeth of the shiftn ing clutch member' Set represents a rod for supporting the sleeve 35, said sleeve being provided with a gear 36 loose thereon and in mesh with gear f3 on shaft 2.

37 represents a gear loose on sleeve 35 in mesh with gear 7 on shaft The gears 3G. 37, are provided with clutch teeth 53S, adapte. to be engaged with the teeth of the clutch member 35).

d() represents a gear xed to sleeve in mesh with gear 10 on shaft 2.

41 represents a. lever engaging 'the clutch member 39 fixed to the rock shaft 42 mounted in the bearing 413.

aff represents a lever fixed to the rock shaft 42. having engagement with the lever arm ett, fixed to the rod 4G, passing through the shifting lever 26 and actuated by the hand lever gf7. l

' By the z rangement of gearing and clutch mechanism 4herein described, the following 23. are provided with clutch The speed changes, through the various trains of gearing, can be obtained l. Assume that clutch member 9 is thrown into engagement with gear 6, clutch member with gear 22 and clutch member 33 with gear 27, motion will be imparted from shaft 2 through gears 6, 22, sleeve 21, and through clutch member 33 to shaft 4, as a prime speed.

l 2. A second change is produced by throwing clutch member 33 into engagement with gear 31, with the remainder of clutch as desciibed for the first speed, producing a back gear speed from gear 27, through gears 28, and 31, to shaft 4. In each instance of change, a prime speed lcan be obtained by throwing clutch member 33 into engagement with gear 27, and a second back gear speed by throwing the clutch into engagement with gear 31.

3. Throwing clutch members 9, 25, and 33 into engagement respectively with gears 6, 23, and 27, whence motion will be imparted from shaft 2, through gear 6, sleeve 5, gears 8, 23, to shaft 4, through clutch member 33 and gear 27.

4. Changing clutch member 33, so as-to bring it into engagementwith gear 31, pro duces the vback gear speed effect through the train described for the third change.

5. Releasing clutch 9, throwing clutch 13 into engagement with gear l0 and throwing clutch member 39 into engagement with gear 36 and clutch member 25 into engage ment with gear 22, clutch member'33 into engagement with gear 27, power is transmitted through the following train -from gear 10,. through gear 40, sleeve 35, clutch member 3), gears 36, 6, and 22, thence through clutch member 25, sleeve 21 and clutch member 33, driving shaft 4, constituting the fifth change.

A sixth change is effected by tl'irowing clutch member 33 into engagement.' with gear 31 with the clutchesin position for the remainder of the gears of the train, just described, whereby motion is imparted to sleeve 21, gears 27, 23, 30, 31, to shaft 4.

A seventh change is c'll'ected by throwing clutch member 3S) into engagement with gear 37 and clutch member 25 into engagement with gear 23, clutch member 33 into engagement with gear 27, whereby motion will be imparted from gear 10, through gear clutch member 32), gears 37, 7, 3, gears 1 clutch member 25 driving sleeve 21, thence shaft, a second shaft, a sleeve loose thereon,

through clutch member 33, driving shaft 4.

An eighth change is eil'ccted by throwing clutch member 33 into engagement with gear 31, whereby the system is brought into actionz-from gear following trainof gearing said gears to said sleeve, a

10 through gear 40, clutch member 3S), gears 1 37, 7, 8, and 23, clutch member 25, sleeve 21., gears 27, 23, 30 and 31, thence through clutch icmber 33 to shaft 4.

A ninth change is effected by throwing clutch member 13 into engagement with gear 10, clutch member 39 into engagement with gear 37, clutch member 25 into-engagement with gear 22 and clutch member 33 into engagement with gear 27, the motion with the clutches in this position will be from gear 10, through gear 40', sleeve 35, clutch 39, thence through gears 37, 7, sleeve 5, gears 6, 22, through clutch 33, driving shaft 4.

A tenthchange can be obtainedby' throwing clutch member 33 into engagement with gear 31, whence the motion will be the same as described forv change nine to` sleeve 21, whence the motion will be through gears'27, 28, 30, 31, clutch 33 driving shaft 4.

An eleventh speed effect can be obtained by throwing clutch member 13 into engagement with. gear 10, clutch member 39 in engagement with gear 36 and clutch meinber 25 inengagement with gear 23, clutch #member into engagement with gear 27,

v4`.vlience motion will be transmitted from gear l() through gear 40, sleeve 35, clutch member 35), gears 36, 6, sleeve 5, gears 8, 23, thence through clutch member 25, sleeve 21 and clutch member 33.

A twelfth change is effected by shifting clutch member into engagement with gear 3l, thc remaining clutches standing in the position described for the eleventh change, which will bring gears 27, 28, 30 and 31 into commission and thence through clutch member 33 driving shaft 4.

Having described my invention, l claim 1. ln a variable speed system of gearing, a lirst shaft, a series of gears loose thereon,

'ioo

clutching devices engaging said gears inl driving relation with said shaft, a sleevc'loose thereon, a pair of gears loose on said sleeve in mesh respectively with shaft, a second ltlfi gears on the first shaft, clutching devices for a pair of gears loose on said sleeve in mesh llt) respectively with gears on the'first shaft,

clutching devices for` alternately connecting second pair of gears loose on said second shaft, one of which is in driving` connection with said sleeve, clutching devices for alternately connecting said gcais to said second shaft,

a third shaft,

u series of gen1-S fixed thereon in mesh re Speetlvely wtth smet fleurs loose ou Stud Second shaft. n fourth shaft, two loose und one fixed gears thereon iu mesh respeetrely' with elutehingv (terieeh for ntt'ertuxtety etutehug' l l luy huurt. Jthree of.' 'the gemas ou the tir/t shaft, :uut i sntt loose gears to Saul fourth hu't`t`r where by, Ithrough the huuuputnton of theetutehm t of the s vsteu't. twetre ehuuges of speed 1u:1 f

HERMAN W. SCHATZ.

vimos 01m 1c B. KAISER,

S. Bueu. 

